Gas saver



April 7, 1925. 1,532,372

H. A. BUCK I GAS SAVER Filed Sept. 10, 1923 ATTEIJE'iN CIT which is equipped the intake port Patented Apr. 7, 1925.-

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GAS SAVERv Application filed September 10, 1923. Serial No. 662,015.

To all whom it may concern:

Be it known that I, HARVEY A. BUCK, a citizen of the United States of America, residing at Toledo, Lucas County, @hio, have invented new and useful Gas Savers, of which the following is a'specification.

This invention relates to auxiliary valve devices.

This invention has utility when incor porated as an automatic air'valve for fuel dilution in internal combustion motors.

Referring to the drawings:

Fig. 1 is a fragmentary view ot a motor vehicle, the internal combustion motor of with an embodiment of the device of this invention;

Fig. 2 is a view on an enlarged scale side of the device or" Fig. 1, and

Fig. 3 is a section of the line III-III, Fig. 2.

The motor vehicle 1 is shown as having internal combustion motor 2 provided with carburetor 3. This carburetor 3 is connected by fuel intake duct or manifold 4, extending to the motor 2. This manifold-4 has opening 5 therein, into which is connected threaded portion 6 of duct 7 of the auxiliary air valve of this disclosure. 7

As herein shown from the duct portion 7 this attachment or housing has at an angle thereto cylinder or chamber provid ing section 8 in communication by opening 9 with the duct section 7 This cylinder 8 is shown as having inlet port 10' adjacent the opening 9, the port 10 being proportionedto materially decrease in size in its extent toward this opening 9. This preferred form of the port10 is shown as triangular with the apex toward the opening 9. In this cylinder 8 there is mounted piston 10 having closure or head 11, with bolt 12 through central opening 13. This head 11 of the piston 10 coacts with washers 14, 15, for holding cup shaped gasket 16 in position for packing the piston 10 on the side thereof remote from the opening 9. To this end the gasket 16 has its flange 17 directed toward head 18 as a closure for this cylinder 8. This head 18 forms a chamber with the piston head 11 and the cylinder S. In this cylinder head 18 is ball check valve 19 normally retained in closed position by spring 20 against air flow from the chamber 21 between the piston and cylinder head 18, This cylinder head 18 is provided with seep age opening 22 permitting flow of air either way as to the chamber 21, but at a slow 1 rate.

The piston '10 is normally urged toward the head 18 by helical spring 23 extending into recess 24 in the piston 10 to engage seat 25 of the piston head 11. The compression of this spring 23 is adjusted by screw 26. In order that/the adjustment of this piston may not be disturbed by any maintained operation otthe motor with incidcntalsuction seepage to the chamber 21, such seepage is precluded by auxiliary chamber 27 as a groove about the piston 10, which chamber 27 is in communication in the various positions of the piston 10 with openings 28 to the atmosphere.

In operation of portant as the motor starts that the fuel be a little richer, but as the motor gets under way the richnessof the fuel may be economically decreased. Such a leaning oi the mixture is automatically effected by the de vice of this disclosure. As the motor starts, the suction as transmitted by the duct 7 through the opening 9 into the cylinl'er 8 is of a capacity greater than the response through the inlet port 10. Thisreduced pressure on the side of the piston 10 toward the opening 9 urges this piston 10 to move up against shoulder 29. This action may occur readily for the ball check 19 opens and supplements the seepage through the port 22. As the piston 10 reaches this upper limit of its stroke, the port 10 is fully closed. The spring 23, which resisted this upward travel, acts to urge this piston 10 amotor vehicle it is im-' back into the cylinder 8L "The check valve 'seated' the air in the chamber-21 serves as a dash pot to resist this return travel of the piston 10 at any rate in excess of the seepage through the opening 22. This means that this structure acts as a one way dashpot, and thatthere is efiective slowing up of any opening of the port 10. The gasket 16 with its flange 17 effectively packs chamber 21' against the air escape past the piston 10. The maintained suction of motor operation may not disturb this dashpot action for such seepage as. may tend to work along the piston '10 may only enter the chamber 27 there to be relieved by communication through ports 28 with the atmosphere. This means that the spring 23 etfectsa slow opening of the port 10, and the piston 10 is gradually shifted to a balanced 19 being or poised position adjusted by the compression of the spring 23 as determined by the adjusting screw 26. The position for nor mal air supply in eflicient operation of the motor may be readily determined as to the particular motor and conditions governing its operation and its character of fuel. Should the demand on the motor build up, this automatic auxiliary air valve will at once respond to increased suction by enriching the mixture due to again reducing the effective area of the intake port 11'). As the motor starts, the piston 10 will Work to position for fully opening port 10, and all is in readiness for the automatic enrichment at the next starting of the motor when the piston 10 will jump into checking position for fully cutting off or materially reducing the auxiliary supply through the port 10. Thereafter this piston 10 Will automatically get its poised position for maintained air leaning of the fuel. 1

What is claimed and it is desired to se cure by Letters Patent is 1. A cylindrical housing having an intake port througha side wall thereof, a piston reciprocable in said housing past said port for closing said port, and a spring normally acting on the piston to resist closing of the port by the piston.

2. An internal combustion motor having a fuel intake duct, means providing an air intake port to such duct exposed to motor suction, a piston in said means normally urged by said suction toward port closing position, an opposing means acting on said piston to keep said port open.

3. An air supply attachment for the suction fuel intake of an internal combusion motor including a duct having a lateral port a piston movable in the duct to close said port, there being releasing means permitting free movement of the piston toward port closing position, retarding means for effecting lag in port opening travel of the piston, and means normally urging the piston into port opening position.

4. An air supply attachment for the suction fuel intake of an internal combustion motor including an angle duct having a position, and piston packing means coacting upon seating of said check valve to retard port opening travel of the piston.

An air supply attachment for the suc-' tion fuel intake of an internal combustion iotor including an angle duct having a port, piston movable in the duct to close said port, a chess: valve permitting irae movement of the piston toward port closing position, piston pao ting means coacting upon seating of said check valve to retard port opening travel of the piston, and a spring normally urging the piston into port opening position, there being a vent for releasing pressure on said piston side as closed said check valve.

6. An air supply attachment for thesu'ction fuel intake'of an internal combustion motor inc" iding an angle duct having a p .n movable in the duct to close said port a check valve permitting free movement of the piston toward port closing position, piston packing means coacting upon seating of said check valve to retard port opening travel of the piston, and an adjustable spring normally urging the piston into port opening for releasing pressure on said piston side as closed by said check valve.

7. An auxiliary air supply attachment for suction intake of an internal combusion mo-- tor embodying a duct having a port, a piston movable to close said port-,and a spring for acting on said piston to keep said port open,

position, there being a vent said duct providing a chamber on the opposits side ot the piston from said port and intake side, and said piston forming With said duct Wall an annular chamber about the piston against intake suction travel to the chamber side of said piston. In Witness whereof I atliX my signature.

HARVEY A. BUCK. 

